fix: revert to simpler disk_size --> 80GB fix

Author: spwoodcock

terraform/nodes.tf

@@ -70,22 +70,6 @@ resource "aws_iam_instance_profile" "karpenter_node" {
   role = aws_iam_role.karpenter_node.name
 }
 
-resource "aws_launch_template" "core_nodes" {
-  name_prefix = "${local.cluster_prefix}-core-"
-
-  block_device_mappings {
-    device_name = "/dev/xvda"
-    ebs {
-      volume_size = 80
-      volume_type = "gp3"
-    }
-  }
-
-  lifecycle {
-    create_before_destroy = true
-  }
-}
-
 resource "aws_eks_node_group" "core_nodes" {
   cluster_name    = aws_eks_cluster.cluster.name
   node_group_name = "core"
@@ -97,10 +81,7 @@ resource "aws_eks_node_group" "core_nodes" {
 
   capacity_type = var.capacity_type
 
-  launch_template {
-    id      = aws_launch_template.core_nodes.id
-    version = aws_launch_template.core_nodes.latest_version
-  }
+  disk_size = 80
 
   scaling_config {
     desired_size = 1